
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>小标题</title>
</head>
<body>
    <div class="outdiv">
        <div class="innerdiv d1">框1</div>
        <div class="innerdiv d2">框2</div>
        <div class="innerdiv d3">框3</div>
    </div>
</body>
</html>